Question

What legal weapon was issued almost automatically by the courts on request of government officials or corporations against union organizing?

Answer 1

I believe the answer is: Injunction

In legal terms, injunction refers to a form of threat that given by one party to another which dictate one party to conform to a certain condition if they want to avoid being sued by the other. Corporations often used this to their employees that they deemed as 'problematic' in order to shut them down.